Preparation method of magnetic ferrite

A technology of ferrite and iron powder, which is applied in the field of ferrite preparation, can solve the problems of large energy consumption, many equipment requirements, and many processing procedures, and achieve the effects of reducing processing difficulty, improving quality, and reducing strength

Active Publication Date: 2019-05-03
滁州市博瑞特工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of environmental protection is becoming more and more prominent at present. The traditional preparation method of ferrite has the problems of lar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The invention provides a technical solution: a method for preparing ferrite, comprising the following steps:

[0034] (1) Ingredients: Ingredients are prepared according to the following parts by weight: 550-600 parts of iron powder, 160-170 parts of iron oxide powder, 150-160 parts of strontium carbonate powder, 120-130 parts of sodium perchlorate, 600 parts of carbon powder -700 parts, 72-78 parts of aluminum powder;

[0035] (2) Mixing: Put the ingredients into the ball mill for coarse grinding, the coarse grinding time is controlled at 5h, the powder particle size is controlled at 2-5μm, after the coarse grinding, heat and dry, the drying temperature is controlled at 55-60°C, and the The drying time is controlled to 1h;

[0036] (3) Mixed combustion: put the raw material powder after drying into the crucible, disperse and feed pure oxygen into the raw material, and the ventilation rate is greater than or equal to 3L / min; ignite the carbon powder until the combustio...

Embodiment 1

[0051] A preparation method of ferrite, comprising the following steps:

[0052] (1) Batching: batching is carried out according to the following raw materials in parts by weight: 550 parts of iron powder, 160 parts of iron oxide powder, 150 parts of strontium carbonate powder, 120 parts of sodium perchlorate, 650 parts of carbon powder, 78 parts of aluminum powder;

[0053] (2) Mixing: Put the ingredients into the ball mill for coarse grinding, the coarse grinding time is controlled at 5h, the powder particle size is controlled at 3μm, after the coarse grinding, heat and dry, the drying temperature is controlled at 55°C, and the drying time is controlled at 1h;

[0054] (3) Mixed combustion: Put the dried raw material powder into the crucible, disperse and feed pure oxygen gas into the raw material, and the ventilation rate is 5L / min; ignite the carbon powder until the combustion heat is completely released;

[0055] (4) Water washing: after the raw material is cooled to roo...

Embodiment 2

[0061] It is basically the same as Example 1, the difference is:

[0062] (1) Batching: batching is carried out according to the following raw materials in parts by weight: 560 parts of iron powder, 160 parts of iron oxide powder, 150 parts of strontium carbonate powder, 120 parts of sodium perchlorate, 642 parts of carbon powder, 76 parts of aluminum powder;

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PUM

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Abstract

The invention discloses a preparation method of magnetic ferrite. The method comprises the following steps: putting ingredients into a ball mill, performing coarse grinding, wherein the coarse grinding time is controlled to 5 h, and the powder particle size is controlled at 2-5 [mu]m, and after the coarse grinding is finished, performing heating drying, wherein the drying temperature is controlledat 55-60 DEG C, and the drying time is controlled to 1 h; and performing mixed combustion: putting the dried raw material powder into a crucible, and dispersedly introducing a pure oxygen gas into the raw material; and igniting the carbon powder until combustion heat is completely discharged. The preparation method of the magnetic ferrite provide by the invention innovates the step of mixed combustion, replaces a pre-sintering step in a conventional process, and can save a large amount of fuel; the method creates a process of aluminum powder burning heating, and can provide a large amount ofheat; and a large amount of introduced oxygen gas can oxidize and cool the burned aluminum powder and iron powder in time to prevent metals from being molten and accumulated together, and the metals are oxidized in time, so that the strength of an oxide can be reduced, and the processing difficulty of the ball milling step is reduced.

Description

technical field [0001] The invention relates to the related technical field of ferrite, in particular to a preparation method of ferrite. Background technique [0002] A composite oxide composed of iron oxide and one or several other metal oxides (called ferrite. Ferrite with ferrimagnetism is a strong magnetic material, commonly known as ferrite magnetic material. Iron Oxygen magnetic materials can be divided into soft magnetic, hard magnetic (including bonding), gyromagnetic, moment magnetic, piezomagnetic and other ferrite materials. Their composition, crystal structure, characteristics and application fields are shown in the table below. They The main features are: soft magnetic materials have high permeability, low coercive force, and low loss; hard magnetic materials have high coercive force and high magnetic energy product; gyromagnetic materials have gyromagnetic properties, that is, electromagnetic waves travel along a constant magnetic field. When propagating in t...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622C04B35/626
Inventor 年四虎
Owner 滁州市博瑞特工贸有限公司
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